Satellite for Demonstration of Panel Extension Satellite (PETSAT)
- Paper number
IAC-07-B4.7.01
- Author
Dr. Yoshiki Sugawara, University of Tokyo, Japan
- Coauthor
Stephen Greenland, University of Tokyo, Japan
- Coauthor
Dr. Hironori Sahara, University of Tokyo, Japan
- Coauthor
Prof. Shinichi Nakasuka, University of Tokyo, Japan
- Coauthor
Mr. Kanichi Koyama, Astro-Technology SOHLA, Japan
- Coauthor
Ms. Chisato Kobayashi, Astro-Technology SOHLA, Japan
- Coauthor
Mr. Hideaki Kikuchi, Astro-Technology SOHLA, Japan
- Coauthor
Mr. Takanori Okada, Astro-Technology SOHLA, Japan
- Coauthor
- Year
2007
- Abstract
"PETSAT" is a novel concept of satellite design. In this concept, a satellite is made of several "Functional Panels" each of which has a special dedicated function. By connecting these panels by reliable connection mechanism in "plug-in" fashion, the total integrated system as a whole has a satellite function. Various combinations of different kinds of functional panels, sometimes in different quantity more than one, provide flexibility to deal with various mission requirements, even though the basic panels are the same for various missions. These panels are stowed during launch into a small volume, and are extended on orbit, realizing a satellite even with a large antenna, large solar cell area or large boom. PETSAT intends to change the satellite development cycle in the following way: 1) Each functional panel can be produced in mass quantity so that the reliability can be improved, and the produced panels are to be stocked. 2) When a certain mission is given, the satellite bus suitable to the mission requirements can be configured only by connecting the appropriate panels in appropriate quantity in "plug-in" fashion without much effort on ground test of the total system. This "semi-customize" type satellite production process is expected to reduce required time and workload dramatically, resulting in a drastic reduction of the satellite cost and development time. Mass production of the panels is the key to reduce cost and to improve reliability, but in the conventional satellite concept, mass production is difficult even in subsystem level due to the wide variety of the mission requirements. PETSAT tries to make this possible by modularizing the various basic subsystem functions into "standard panels," and by dealing with the variety of mission requirements with the quantity of the utilized panels of different functions. SOHLA-2 is a 50Kg microsatellite and will be the first demonstrator of PETSAT. SOHLA-2 consists of subsystem panels, which are communication panel, attitude control panel, propulsion panel, mission panel, experiment panel and CubeSat panel which is a manager of the demonstration of SOHLA-2. CubeSat is a 10cm cube shape small Satellite and two CubeSat has been launched already and one has been operated more than three years and the other is more than one year. Each panel is standardized, which means that each panel has common information processing unit, common power generation and control unit, standardized area for mount of devices and mechanical joint unit with other panels. Whole design of SOHLA-2 is fixed more minutely and Engineering Models are designed for almost all devices. In the paper, feature of SOHLA-2 is introduced, and some problems and solutions to realize standardized satellite such a SOHLA-2 is shown. Additionally development progress and special feature of each devises are introduced.
- Abstract document
- Manuscript document
IAC-07-B4.7.01.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.